failing test for: echo "foo = \"foo\""
actually the test was wrong, module works fine
failing tests for unimplemented env interpolation
fixed a failing env test
minor fix to an env test
half the env tests are working with basic interpolation
factor out interpolation
one test was wrong, checking for pre escapes
pass another test by using "" as the undefined
now just 2 tests failing with a subtle regex reordering
use tape everywhere
externalize the regex declaration
denormalize the interpolate logic to make room for special cases
one more test passing with quote recursion
better parse recursion to capture the containing quotes
finally passing all the tests
cleaner implementation recursing on the double quote case
some extra metacharacter tests just to be sure
another test to be even more sure
modernize the readme